UKOOA Phase II Task 3: Simulated bioturbation of drill cuttings – results from small scale laboratory experiments
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https://hdl.handle.net/11250/2711498Utgivelsesdato
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Bioturbation can influence many of the characteristics of sediments, including their stability, microbial activity and degradation rates of contaminants. This study addresses the effects of mechanical disturbance, resembling bioturbation, on hydrocarbon levels (indicative of degradation and leaching). Drill cuttings from Ekofisk 2/4A, Beryl A and reference sediment were exposed to mechanical disturbance of different rates. The aim of this disturbance was to mimic variable effects of bioturbation rates on cuttings. Redox profiles in the sediment and levels of THC in the surface sediment were the main investigated parameters.